Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349670 | Process for the preparation of cationic dyestuffs | Heinz Giesecke | 1982-09-14 |
| 4338258 | Fluorescent dyestuffs, processes for their preparation and their use as laser dyestuffs | Wolfgang Brinkwerth, Wolfgang Huffer, Rudolf Schieder, Helmut Telle | 1982-07-06 |
| 4326066 | Triazolyl coumarin compounds, processes for their preparation and their use as whiteners and laser dyestuffs | Udo Eckstein, Carl-Wolfgang Schellhammer | 1982-04-20 |